As an undergraduate, Katherine Taylor (CWR '11) decided that dogs represented a great service learning opportunity.

After working regularly with more than 80 canines at Cleveland's Animal Protective League—walking them, socializing them and assessing their behavior—the biology major has gone on to Ohio State University, where she is studying to become a veterinarian. Her experience at the shelter gave her an appreciation for how easy it can be to fall in love with a puppy, but what a commitment day-to-day ownership can be.

In light of these experiences, Taylor suggests taking an honest look at your lifestyle, your finances and your long-term plans when contemplating pet adoption.

You should also plan ahead for purchases like food, treats, a collar and leash, toys and grooming tools—as well as for medical expenses. "It's important to remember that this is a huge commitment, especially if you're getting a puppy," Taylor says. "Often, that makes an older dog a great choice for many people."

While you can certainly purchase a dog from a breeder, Taylor is an advocate for adoption from a reputable animal shelter. "A good shelter should help match you with the right dog and allow you to get to know the dog," she says. "In some cases you may be able to take an adoptable dog home for the weekend to see how it goes."

When you visit the shelter, Taylor suggests looking for dogs that exhibit calm, submissive behavior. Good physical signs include a wagging tail and ears that are up and forward, indicating playfulness.

On the other hand, it's important to notice if a dog seems scared, timid or overly aggressive. "A comfortable dog usually likes humans and will be comfortable approaching them." Taylor says. "But don't judge a dog by how he acts in his cage at the shelter, which can be a noisy and scary place. It's better to see how he behaves with you in a quiet room."

Need additional help? Call an animal behaviorist (your vet should be able to make a recommendation).